| 不同施肥处理对光合碳在花生-土壤系统中分配的影响 |
| |
| 引用本文： | 李朋发,江春玉,李忠佩.不同施肥处理对光合碳在花生-土壤系统中分配的影响[J].土壤,2019,51(5):923-928. |
| |
| 作者姓名： | 李朋发 江春玉 李忠佩 |
| |
| 作者单位： | 土壤与农业可持续发展国家重点实验室（中国科学院南京土壤研究所）,土壤与农业可持续发展国家重点实验室（中国科学院南京土壤研究所）,土壤与农业可持续发展国家重点实验室（中国科学院南京土壤研究所） |
| |
| 基金项目： | 国家自然科学基金项目(41771298)和国家重点基础研究发展计划(973)项目(2015CB150501)资助。 |
| |
| 摘 要： | 通过室内花生盆栽,设置NPK(常规氮磷钾施肥)、NPKS(常规氮磷钾加玉米秸秆)、NPKA(常规氮磷钾加腐殖酸)和CK(不施肥对照)4个不同的施肥处理,采用3次~(13)CO2脉冲标记的方法对不同施肥处理下光合碳在花生-土壤系统中的分配进行定量研究。结果表明:不同施肥处理对标记期内花生总生物量影响不显著,但是NPKA处理显著提升了花生根系生物量,较CK、NPK和NPKS分别高22.04%、19.47%和53.38%。NPKS处理地上部~(13)C丰度最高,但土壤中~(13)C丰度最低,NPKA处理土壤中~(13)C丰度最高。各处理地上部的~(13)C含量无显著差异,NPKA处理根系的~(13)C含量显著高于NPK且土壤~(13)C含量显著高于其他处理。NPKA处理地上部的~(13)C分配比例最低而土壤中分配比例最高,根系~(13)C分配比例与其他处理无显著差异,根系与土壤~(13)C分配比例之和显著高于其他处理。本研究表明腐殖酸能显著促进花生光合碳向地下部的转运。
|
| 关 键 词： | 花生 光合碳 施肥方式 13C脉冲标记 分配 |
| 收稿时间： | 2018/3/20 0:00:00 |
| 修稿时间： | 2018/5/13 0:00:00 |
Effect of Different Fertilization Methods on Distribution of Photosynthetic Carbon in Peanut-soil System Using 13C Pulse Labeling Technique |
| |
| LI Pengf,JIANG Chunyu and LI Zhongpei.Effect of Different Fertilization Methods on Distribution of Photosynthetic Carbon in Peanut-soil System Using 13C Pulse Labeling Technique[J].Soils,2019,51(5):923-928. |
| |
| Authors: | LI Pengf JIANG Chunyu and LI Zhongpei |
| |
| Institution: | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences and State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences |
| |
| Abstract: | 13C pulse labeling technique was used to trace the fate of 13C in peanut-soil system and assess the effect of different fertilization methods on the distribution of photosynthetic carbon. Four treatments were set up in this experiment, namely NPK (normal fertilization method), NPKS (normal fertilizer and corn straw), NPKA (normal fertilizer and humic acids) and CK (no fertilizer). Results showed that the differences were not significant in total peanut biomass among different treatments. However, the root biomass of NPKA was 22.04%, 19.47% and 53.38% higher than those of CK, NPK and NPKS, respectively. Abundance of 13C in aboveground was highest in NPKS while NPKA had highest 13C abundance in soil. 13C concentration showed no significant difference among treatments in aboveground but concentration of NPKA was higher than NPK in roots and was highest in soil. Distribution ratio of 13C of NPKA was lower than those of other treatments in aboveground and was highest in soil, showing that application of humic acids can significantly promote the transport of peanut photosynthetic carbon to the underground. |
| |
| Keywords: | Peanut Photosynthetic carbon Fertilization method 13C pulse labeling Distribution |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《土壤》浏览原始摘要信息 |
| 点击此处可从《土壤》下载免费的PDF全文 |
|
